sptrf Interface

public interface sptrf

SPTRF computes the factorization of a complex symmetric matrix A stored in packed format using the Bunch-Kaufman diagonal pivoting method: A = UDUT or A = LDLT where U (or L) is a product of permutation and unit upper (lower) triangular matrices, and D is symmetric and block diagonal with 1-by-1 and 2-by-2 diagonal blocks.


Subroutines

public pure subroutine csptrf(uplo, n, ap, ipiv, info)

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: uplo
integer(kind=ilp), intent(in) :: n
complex(kind=sp), intent(inout) :: ap(*)
integer(kind=ilp), intent(out) :: ipiv(*)
integer(kind=ilp), intent(out) :: info

public pure subroutine dsptrf(uplo, n, ap, ipiv, info)

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: uplo
integer(kind=ilp), intent(in) :: n
real(kind=dp), intent(inout) :: ap(*)
integer(kind=ilp), intent(out) :: ipiv(*)
integer(kind=ilp), intent(out) :: info

public pure subroutine ssptrf(uplo, n, ap, ipiv, info)

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: uplo
integer(kind=ilp), intent(in) :: n
real(kind=sp), intent(inout) :: ap(*)
integer(kind=ilp), intent(out) :: ipiv(*)
integer(kind=ilp), intent(out) :: info

public pure subroutine zsptrf(uplo, n, ap, ipiv, info)

Arguments

Type IntentOptional Attributes Name
character(len=1), intent(in) :: uplo
integer(kind=ilp), intent(in) :: n
complex(kind=dp), intent(inout) :: ap(*)
integer(kind=ilp), intent(out) :: ipiv(*)
integer(kind=ilp), intent(out) :: info

Module Procedures

public interface stdlib_csptrf()

Arguments

None

public interface stdlib_dsptrf()

Arguments

None

public interface stdlib_ssptrf()

Arguments

None

public interface stdlib_zsptrf()

Arguments

None